JEBland
INGO's least subtle Alphabet agency taskforce spy
Just a guess, but could it be that the Lapua is made slightly oversized for looser chambers?Maybe, I have read that the match chamber on my rifle is made to minimum SAMI specs for 22 LR and to expect lead 22 bullets to fit tight. Also read not to use high velocity rounds as the case is very slightly longer and can be deformed by the chamber.
All I really know is it likes SK Rifle Match best